sweeney



- (No Model.) 2 Sheets-Sheet 1.

D` SWEENEY.

GRINDING MACHINE.

Patented Jan. 51892.

M f M f A o WITNESSES t unie@ Siwe ene y; BY ATT'Y.

me Noms Fnss co., wow-mno., wAsHlNu-rau u c (No Model.) 2 Sheets-Sheet 2.

D. SWEENEY.

GRINDING MACHINE.

No. 466,729. Patented Jan. 5, 1892.

@a1/ziel Swee neg',

BY UQMWTWY. l

ma mums wenns co., Primo-umu. msnmero, u. z:l

UNITED STATES PATENT OFFICE.

DANIEL SWEENEY, OF NEVARK, NEV JERSEY, ASSIGNOR OF ONE-HALF TOv EDlVIN SHEPARD, OF SAME PLACE.

GRlNDlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 466,729, dated January 5, 1892,.

Application led February 28, 1891. Serial No. 383,239. (No model.)

To all whom it may concern/ Be it known thatl, DANIEL SWEENEY, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful` companying sheets of drawings, and the following description indicating t-he mode of operation thereof, while the claims appended specify those featuresin said machine which are new. i

One of the main features of the machine is its simplicity of construction and its adaptability for sharpening at one time a large number of pencils, the latter rolling from an inclined shelf at one side of the grindingwheel beneath a roller, which conveys the pencils over the said grinding-wheel and delivers them sharpened upon the other side of the machine.

In said drawings, Figure l is a side elevation of the improved machine. Fig. 2 is a plan of the same; and Fig. 3 is a like view with certain parts removed to illustrate more clearly the arrangement of the shelf from which the pencils are fed upon the grindingwheel and clearly indicating the manner in which the pencils pass along the curved pencil-conveying bed of the machine with one end of the pencil against the periphery of the grinding-wheel, whereby the proper and perfect point is produced. On Sheet 2, Fig. 4, is an end view of the machine with the roller and the pencil-shelf removed. Fig. 5 is a vertical section taken on line m in Fig. l, clearly showing the arrangement and construction of the grinding-wheel and also the manner of pivoting the curved pencil-conveyingbed to the frame or casing of themachine and the manner of feeding t-he pencils through the machine. Fig. 6 is a detail view of that part of the machine to which said pencil-conveying bed is pivoted, and Fig. 7 is a vertical section 55 ties in its periphery, into which fit the links 6o of a chain, of which Fig. l0 is aside view and Fig. ll is a top view.

In said views, A designates a casing, preferably made of iron, provided at its bottom with lugs a for firmly securing said casing to a table or other object. Said casing is provided in the bottom thereof with a drawer B, having a knob b for pulling the same out of the casing, said drawer being placed directly beneath the grinding-wheelc to receive the 7o dust and chips ground off from the end of the pencils. As will be seen from Fig. l, the opposite sides of said casing are provided with the openings a' and the guides c2 on their edges, in Whichare made to slide the upper and lower journalbearings 0.3, ribs a* and a5 being formed across the openings d above and below said bearings, provided with threaded perforations, in which can be made to turn the threaded thumb 0r wing screws 8o c6 and d'7, by means of which the bearings can be raised or lowered and made to slide in their guides to adjust the grinding-wheel c to the proper height. Said wheel is firmly Secured on a spindle or shaft c', which eX- 85 tends throughthe said bearings, being provided on one end with a collar c2 or its equivalent and on the other end with a small wheel c3, connected by means of abelt or link chain d with the driving wheel CZ', the 9o axle d2 of which rotates in bearings as, formed on one end of the casing A, and which ispro vided with a handle (Z3 for operating the wheel. As will be seen, more especially from Fig. 5,

said wheel c is provided with a concave periphery and is coated with a thick layer of emery or other like grinding material, the same being secured thereto in any convenient manner. Then the driving-wheel d', which is of a greater diameter than the wheel c3, is Ico rotated by means of its handle, said chain or belt d operates the wheel c3, causing the grinding-wheel c to rotate iu itsbearings with great speed. As will be noticed from Fig. l, the upper edge of the casing A is inclined toward one end, being provided at or near the upper end with abearing-plate e, se-

cured by means of screws through ears e to the sides of the casing. Said plate e is also provided with a centrally-arranged and open slot e2, extending in the .longitudinal direction of the casing. Upon this bearing-plate e I have placed a second plate es, provided with a rectangular opening or hole e4, in which slides the head of a screw or pivotal pin e5, the threaded portion of which extends down into the slot e2 and is provided with a nut e, whereby said plate can be swung in either direction upon the plate e, as indicated in dotted lines in said Fig. 6, and whereby` said plate e3 is adjustable in the direction of the slot e2 in the bearing-plate e. Said swingplate e3 is provided with two upwardlyfprojecting ears or lugs e7, provided with holes, and to said ears is hinged the pencil-conveying bedfby means of the ears f', whereby said bed can be rotated upon its ears or hinges when necessary in order to get at the grinding-wheel, as will be evident. Said bed f, as will be seen from Figs. l, 2, and 3,is supported at its lower end on an adj usting-screw a9, adapted to be raised and lowered in the perforated lug d10 on the end of the casing, in order to adjust said plate at the proper angle to the upper surface of the grinding-wheel7 whereby the pencils are caused to receive a point eitherlong or short, according to such adj ustment. The bed-plate is also of such construction that one of its sides is much higher than the other, as will be seen from Figs. 4 and 5, being provided upon its higher edge with an upwardly-inclined shelf g, adapted to receive the pencils and causing them by their own weight to roll down against the edge of a feedroller h, supported on a shaft h', rotating in adjusting-screws h2 and h3, turning in bearings h4 and h5, secured on the inclined bedf. An adjustable guide or shoulder g is formed on theshelf g to properly direct the pencils in front of the feed-roller 7L. Said bed-plate f is formed with a downwardly-curved guiding-surface f2, provided with a cushion t, of rubber or felt or other soft material, and the feed-roller 7L has a layer of soft rubber or felt -j on its'peripheral surface, (see Fig. 5,) which, when the first pencil strikes saidr roller, as soon as the roller is rotated causes said pencil to be forced between the two soft cushions and guided along the curved part of the bedplate, the one end of the pencil projecting through an opening f3 in said plate and bringing said end of the pencil in contact with the grinding-surface of the wheel c, across which it is fed and ground,as will be described further on. A shield f4 may be formed direct-ly above-said opening to prevent the dust from passing up into the room and provided with an opening fin the side thereof to allow the pencils to be rotated across the machine.

As will be seen more especially from Figs.

.l and 4, I have provided the outwardly-proj ecting portion directly above the bearings as with a plate k, to which is secured, by means of a pin 7a', a serrated or toothed wheel 7a2, which is operated by means of a worm d4 on the axle d2, as will be clearly understood from Fig. 4, said pin la being provided with a wheel k3 in holding operation with the serrated wheel 7a2, from which it receives its motion, which is transmitted by means of a belt or link chain Z, passing through perforations f in the bed f and around a pulley-wheel h4 on the shaft h', the pulley-wheel being preferably of a larger diameter, so as to give a very slow movement to the feed-roller.

The operationof the machine is as follows: Any number of slate or lead pencils or any other objects to be pointed-such as carbonsare placed upon the shelf g, the lower pencil bearing directly against the cushioned surfaces of the feed-roller and the curved bedplate f. As soon as the drive-wheel d is 0perated the grinding-wheel c rotates with great rapidity, while the shaft or axle d2 causes its worm and serrated wheel to slowly revolve the feed-roller h in a direction at an angle to that of the grinding-wheel. When the feedroller is thus set in operation, it causes the 'pencil to be forced down between the soft cushions and j in such a manner that they rotate about their central axes in planes parallel to the central axis of the feed-roller and at an angle to the plane of rotation of the grinding-wheel. As soon as the pencil strikes the edge c4 of the grinding-wheel (see Figs. 3 and 5) the edge of the pencil is being ground,and as the pencils pass down along the curve in the bed-plate f the point becomes longer and sharper, moving along the concave periphery of the grinding-wheel until the pencils are finally discharged, completely sharpened, on the opposite side of the machine, and roll upon a shelf m. (Shown in dotted lines in Fig. 5.)

In order to prevent any slipping of the belts, l contemplate using a link chain substantially of the construction illustrated in Figs. 10 and ll, and I provide the circumference of each wheel with cavities, such as are shown more especially in Figs. S and 9, the widths of the successive cavities varying alternately so as to conform t-o the arrangement of the.

links comprising the chain.

Of course it will be seen that the machine is well adapted for the grinding of certain kinds of tools, and that l do not wish to limit myself to the exact sizes of the several parts herein shown-as, for instance, in grinding certain kinds of tools or perhaps .carbons for electric-light purposes the driving-wheel can be driven by power instead of by hand.

Having thus described my invention, what I claim is- 1. In a machine for sharpening pencils, carbons, tbc., the combination, with the grindingwheel arranged in bearings in a casing, and means for rotating the same, of a feed-roller IOO IIO

adjustably arranged above `said grindingwheel, its central vertical plane being at an angle less than a right angle to theplane of mot-ion of the feed-roller, whereby said roller is adapted to rotate the pencils or carbons at an angle across the periphery of the grinding-Wheel, substantially as set forth.

2. In a machine for sharpening pencils, carbons, Jac., the combination,`with the grindingwheel arranged in bearings in a casing and provided With a concave periphery, and means for rotating the same, of a feed-roller adapted to rotate the pencils or carbons at an angle across the periphery of the grinding-Wheel, substantially as set forth.

In a machine for sharpening pencils, carbons, duc., the combination, with the grinding- Wheel arranged in bearings in a casing adj nstable in guides therein and provided With a concave periphery, set-screws for adjusting said bearings, and means for operating said grinding-Wheel, of a feed-roller adapted to rotate the pencils or carbons at an angle across the periphery of the grinding-Wheel, substantially as set forth. v

4. In a machine for sharpening pencils, carbons, rbc., the combination, with the casing and a grinding-Wheel arranged therein, of an adjustable bed-plate, and afeed-roller adapted to rotate the pencils or carbons at an angle across the periphery ot' the grinding-Wheel, substantially as set forth.

5. In a machine for sharpening pencils, carbons, tbc., the combination, with the casing and a grinding-wheel arranged therein, of a bed-plate hinged to said casing, and a feedroller adapted t0 rotate the pencils or carbons at an angle across the periphery of the grinding-Wheel, substantially as set forth.

6. In a machine for sharpening pencils, carbons, the., the combination, with the casing and a grinding-wheel provided with a concave periphery, of an adjustable bed-plate provided With a curved guiding-surface and an opening therein directly-in front of the grinding-Wheel, and a feed-roller adapted to rotate the pencils or carbons at an angle across the periphery of the grindingwheel, substantially as setforth.

7. In a machine for grinding pencils, carbons, dac., the combiuatiomwit-h the casing anda grinding-Wheel provided with aconcave periphery, of a bed-plate arranged above said grinding-Wheel, inclined longitudinally and transversely to the axis of the grinding-Wheel, and a feed-roller adapted to rotate said pencils across the periphery of the Wheel, substantially as set forth.

S. In a machine for grinding pencils, carbons, rbc., the combination, with the casing and the grinding-wheel arranged on a shaft in bearings in said casing and provided with a Wheel on one of its free ends,.of abcd-plate hinged to said casing, provided with a guiding-surface and an opening directly in front of the grinding-Wheel, bearings on said bedplate, a shaft therein, and a feed-roller thereon, and means for rotating said` grinding- Wheel and the feed-roller at an angle to each other,\vhereby the pencil is fed across the periphery ofthe grinding-Wheel, substantially as set forth. v

9. In a machine for grinding pencils, carbons, ttc., the combination of the casing, a grinding-wheel arranged on a shaft' in bearings in said casing and provided on one end with a wheel, a dri ve-Wheel arranged on an axle in bearings in one end ofthe casing and a link chain or belt connecting said wheels, a Worin on said axle carryingthe drive-Wheel, and a serrated Wheel gearing with said worm, a pulley-Wheel secured to said serrated WheeLa bed-plate hinged on said casing, provided with bearings,ashaftinsaidbearings,awheelthereon, and a link chain or belt connecting Said Wheel with the pulley-wheel connected with the serrated Wheel, and a feed-roller on said shaft above the bed-plate, all of said parts being operated from said drive-Wheel, whereby the-pencils are rotated at an angle across the periphery of the Wheel, substantially as set forth.

l0. In a machine for grinding pencils, carbons, ttc., the combination, With the casing, the pencil-carrying bed plate, anda grinding- Wheel, of the bearing-plate e, secured'to said casing, and a pivoted and slotted journal-carrying plate adj ustably secured to said plate e,

substantially as set forth.

ll. In a machine for grinding pencils, carbons, duc., the combination, With the casing, a grinding-Wheel, and a pencil-carrying bed, of a bearing-plate c, secured to said casing and ICC provided with a slot extending in the longitudinal direction of the casing, and a pivoted and slotted journalcarrying plate secured to said plate e, and means at the opposite end of the casing for adjusting the bed-plate verti-` cally, substantially as set forth.

12. In a machine for sharpening pencils, carbons, doc., the combination, With the casing and the grinding-Wheel,of a pencil-carrying `bed-plate provided with ears, said plate being adjustable in a longitudinal and transverse direction on a bearing-plate secured tothe casing, and means for operating said grinding- Wheel, substantially as set forth.

13. In a machine for sharpening pencils,

carbons, dac., the combination, With the grind-- ing-Wheel and a casing, of a pencil-carrying bed-plate provided with ears, said plate being adjustable in a longitudinal and transverse direction on a bearing-plate secured to the casin g, and means for operating said grinding- Wheel, and a feed-roller arranged in bearings on said bed-plate, adapted to rotate at an angle to the plane of rotation of the grinding-WheeLwhereby the pencils are fed across the periphery of the grinding-Wheel, substantially as set forth.

let. In a machine for sharpening pencils, carbons rbc., the combination, with the grinding-Wheel arranged in bearings ina casing adjustable in guides therein and provided with a concave surface, of a pencil-carrying bed-plate provided with a curved guidingsurface and a rubber or other like cushion on said surface, and a feed-roller providedon its peripheryvvitha similar cushion,whereby said pencils are forced across the periphery of the grinding-Wheel, substantially as set forth.

15. In a machine for sharpening pencils, carbons, &c., the combination, with the grinding-wheel arranged in bearings in a casing adjustable in guides therein and provided with a concave surface, v0f a pencil-carrying bed-plate provided with a curved guidingsurface and a rubber or other like cushion on said surface, and a feed-roller provided on its periphery with a similar cushion,whereby said pencils are forced across the periphery of the grinding-Wheel, and a pencil-carrying shelf on said bed-plate for feeding the pencils in front of the feed-roller, substantially as set forth.

16. The combination, in a machine for sharpening pencils, carbons, &c., of an inclined and curved pencil-guiding bed-plate and a grinding-Wheel provided with a concave periphery arranged and adapted to sharpen the pencil, substantially as set forth.

17. In a machine for sharpening pencils, carbons,' dac., the revolving grinding-wheel and a curved and inclined supporting-bed for the pencils, substantially as set forth.

18. In a machine for sharpening pencils, carbons, dac., a revolving grinding-wheel and adjustable bearings in which said Wheel is supported and a curved and inclined and adjustable supporting-bed for the pencils, substantially as set forth. 4

19. In a machine for sharpening pencils, carbons, &c., a casing and a revolving grinding-Wheel therein, a curved and inclined and adjustable supporting-bed for the pencils, and a drawer in said casing, substantially as set forth.

20. The herein-described pencil-sharpening machine, consisting of a casing provided with a drawer, a grinding-wheel arranged in adjustable bearings in said casing, ahand-wh eel arranged on an axle in bearings in one end of the casing, a pulley-Wheel on the end of the shaft, on which said grinding-wheel is arranged, and a belt or its equivalent connecting said Wheel with the driving-Wheel, a Worm on the driving-wheel axle, and a serrated wheel engaging therewith, provided with a pulley-wheel, a curved and inclined and adjustable pencil-guiding bed-plate, bearings on said bed-plate, a shaft therein and pins for adjusting said shaft, a feed-roller and a pulley on said shaft, a belt or its equivalent connecting said pulley with the'pulley-Wheel on the serrated wheel, and a pencil-carrying plate or shelf on the bed-plate,provided with an adjustable guide, all of said parts being arranged and operating substantially' as and for the purposes set forth.

21. In a machine for sharpening pencils, carbons, dac., the combination of a guidingbed, a cushion of soft material on said plate, a grinding-wheel, and means foroperating the same, substantially as set forth.

22. In a machine for sharpening pencils, carbons, &c., the combination of an inclined and curved pencil-guiding bed, a cushion of soft material on said plate, a grinding-wheel, and means for operating the same, substantially as and for the purposes set forth.

23. In av machine for sharpening pencils, carbons, &c., the combination of an inclined and curved pencil-guiding bed, a cushion of soft material in the curved portion of said bed, and a grinding-Wheel provided with a concave periphery arranged and adapted to sharpen the pencil, substantially as and for the purposes set forth.

2l. In a machine for sharpening pencils, carbons, &c., the combination of a grinding- Wheel and means for rotating the same, a ,l

feed-roller provided on its peripheral surface with a soft cushion, and a pencil-guiding bed having a soft cushion, whereby the pencils or carbons are rotated across the periphery of the grinding-wheel, substantially as and for the purposes set forth.

25. In a machine for sharpening pencils, carbons, &c., the combination of a grinding- Wheel provided with a "concave periphery, a feed-roller provided on its peripheral surface with a soft cushion, and a pencil-guiding bed provided with a curved surface concentric with the peripheral curve of the surface of the feed-roller, and a soft cushion on said curved surface in the guiding-bed, whereby the pencils or carbons are rotated across the periphery of the grinding-wheel, substantially as set forth.

In testimony that I claim the invention set forth above I have hereunto set my hand this 25th day of February, 1891.

- DANIEL SWEENEY. Witnesses.

FREDK. C. FRAENTZEL, W. B. FRAENTZEL.

IOO 

